Home / 20,776.04-31,174.32-12,876.42

Finding the Fourth Proportional to 20,776.04, 31,174.32 and 12,876.42

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Solution

The fourth proportional to 20,776.04, 31,174.32 and 12,876.42 is: 19,320.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.04 : 31,174.32 = 12,876.42 : x
  2. Step 2: Convert to fraction form
    20,776.04/31,174.32 = 12,876.42/x
  3. Step 3: Cross multiply
    20,776.04x = 31,174.32 × 12,876.42
  4. Step 4: Simplify right side
    20,776.04x = 401,413,554.94
  5. Step 5: Solve for x
    x = 401,413,554.94/20,776.04
  6. Step 6: Final answer
    x = 19,320.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.